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Highly active, durable and cost-effective eletrocatalysts are crucial for hydrogen evolution reaction (HER). Herein, we report novel hollow hybrid spheres comprising of amorphous Ni(OH)2 and crystalline CuS mesoporous nano-shelled heterostructures as efficient HER electrocatalysts. Spherical Cu2O particles are used as templates for fabrication of Ni(OH)2@CuS hollow spheres with nano-shelled heterostructures...
Cu2O microspheres were successfully encapsulated by graphene oxide (GO) nano-sheets and used directly as the anode material for lithium ion batteries. The core–shell structured Cu2O@GO composite delivered a reversible capacity of 458mAhg−1 at a current density of 100mAg−1 after 50 cycles. Even at a high charge–discharge rate of 1000mAg−1, Cu2O@GO still demonstrated a reversible capacity of 240mAhg...
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